INA2128U

Product Overview

Category: Integrated Circuit (IC)
Use: Amplifier
Characteristics: High precision, low offset voltage, low noise
Package: SOIC (Small Outline Integrated Circuit)
Essence: Instrumentation amplifier
Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

Supply Voltage Range: ±2.25V to ±18V
Input Offset Voltage: 50µV (maximum)
Gain Bandwidth Product: 1MHz
Input Bias Current: 500nA (maximum)
Common Mode Rejection Ratio: 100dB (minimum)
Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA2128U has a total of 8 pins:

V+ (Positive Power Supply)
V- (Negative Power Supply)
REF (Reference Voltage)
IN- (Inverting Input)
IN+ (Non-Inverting Input)
OUT (Output)
NC (No Connection)
NC (No Connection)

Functional Features

High accuracy amplification of differential signals
Low input offset voltage for precise measurements
Wide supply voltage range for versatile applications
Excellent common mode rejection ratio for rejecting noise
Low noise output for clean signal amplification

Advantages and Disadvantages

Advantages: - High precision amplification - Low offset voltage - Low noise output - Wide supply voltage range

Disadvantages: - Limited gain bandwidth product - Higher cost compared to basic operational amplifiers

Working Principles

The INA2128U is an instrumentation amplifier designed to amplify small differential signals with high accuracy. It consists of three operational amplifiers configured in a specific way to provide high gain and excellent common mode rejection. The inputs are buffered and the output is differential, allowing for precise measurements in noisy environments.

Detailed Application Field Plans

The INA2128U is commonly used in various applications, including:

Medical equipment: ECG (Electrocardiogram) amplification
Industrial control systems: Sensor signal conditioning
Audio equipment: Microphone preamplification
Precision measurement instruments: Strain gauge amplification
Communication systems: Signal conditioning for data transmission

Detailed and Complete Alternative Models

AD620: Low power instrumentation amplifier
INA128: Precision instrumentation amplifier
AD8221: Rail-to-rail instrumentation amplifier
LT1167: High precision instrumentation amplifier
MCP6N11: Zero-drift instrumentation amplifier

These alternative models offer similar functionality and can be considered as substitutes for the INA2128U in various applications.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van INA2128U in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of INA2128U in technical solutions:

Q: What is the INA2128U? A: The INA2128U is a precision instrumentation amplifier that can accurately measure small differential voltages.
Q: What is the input voltage range of the INA2128U? A: The INA2128U has a wide input voltage range of ±200mV, making it suitable for measuring small signals.
Q: Can the INA2128U operate with a single power supply? A: Yes, the INA2128U can operate with a single power supply ranging from 2.7V to 36V.
Q: What is the gain accuracy of the INA2128U? A: The gain accuracy of the INA2128U is typically 0.01%, ensuring precise measurements.
Q: Is the INA2128U suitable for low-power applications? A: Yes, the INA2128U has a low quiescent current of 350µA, making it suitable for low-power applications.
Q: Can the INA2128U handle high common-mode voltages? A: Yes, the INA2128U can handle common-mode voltages up to ±13V, allowing it to reject common-mode noise effectively.
Q: Does the INA2128U have built-in protection features? A: Yes, the INA2128U includes built-in protection against overvoltage, reverse polarity, and short circuits.
Q: What is the bandwidth of the INA2128U? A: The INA2128U has a bandwidth of 500kHz, enabling it to accurately measure fast-changing signals.
Q: Can the INA2128U be used in temperature-sensitive applications? A: Yes, the INA2128U has a wide operating temperature range of -40°C to +125°C, making it suitable for temperature-sensitive applications.
Q: What are some typical applications of the INA2128U? A: The INA2128U is commonly used in precision current sensing, motor control, data acquisition systems, and medical instrumentation.

Please note that these answers are general and may vary depending on specific application requirements.